87768

Appears in sequences

• McKay-Thompson series of class 28B for the Monster group.at n=43A112169
• Number of ways to place n nonattacking composite pieces rook + rider[1,6] on an n X n chessboard.at n=8A189853
• G.f.: A(x) = x + x*ITERATE^2(x + x*ITERATE^3(x + x*ITERATE^4(x + x*ITERATE^5(x + ...)))), where ITERATE^n(F(x)) denotes the n-th iteration of F(x), and the nested iterations continue indefinitely.at n=7A195192